Required psu for 4k?

[Th3clown]

im thinking of purchasing a 4k monitor but I'm not sure if I need to change my psu. My hardware is as follows:
Evga 850w gold full modular
Geforce gtx Titan x
Samsung 500gb ssd
3tb barracuda hhd
Asus z97-a mobo
Intel I7 4790k 4.0ghz
16gb ram 8x2 Kingston Fury

Sorry for not giving full details on the specs as I can't recall the exact parts.

Should I be okay with my psu?

 

[Someone Somewhere]

Display resolution doesn't really affect power usage; only in that your GPU may need to work harder.

You could even run a second Titan X on that PSU.

 

[senseijtitus]

If your current PSU is working good with this spec without the 4K monitor, it will do the same even with 4K monitor.